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C: create my own include file

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Bruno Raoult
2021-09-03 15:17:18 +02:00
parent 8ebb596c9f
commit 215629a19c
4 changed files with 21 additions and 41 deletions
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25
c/phone-number/src/phone_number.c
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@@ -1,4 +1,3 @@
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
@@ -10,15 +9,15 @@
#define LPAREN '('
/* this version is likely not very stable, due to poor scanf() capabilities
* I made it to offer an option to traditional strtok() of manual string
* I made it to offer an option to traditional strtok() or manual string
* parsing.
*/
char *phone_number_clean(const char *input)
{
char *scan="%m[+(0-9]%*[()-. ]%m[0-9]%*[()-. ]%m[0-9]%*[-. ]%m[0-9]";
char *sn[4];
int64_t num[4];
int64_t *p = &num[0];
uint64_t num[4];
uint64_t *p = &num[0];
int nmatch;
char *res;
@@ -30,7 +29,7 @@ char *phone_number_clean(const char *input)
nmatch = sscanf(input, scan, &sn[0], &sn[1], &sn[2], &sn[3]);
for (int i=0; i<nmatch; ++i) {
num[i] = atol(*sn[i] == LPAREN? sn[i]+1: sn[i]);
*(p+i) = atol(*sn[i] == LPAREN? sn[i]+1: sn[i]);
free(sn[i]);
}
@@ -39,19 +38,21 @@ char *phone_number_clean(const char *input)
case 0:
return res;
case 1:
if (num[0] > 10000000000)
num[0] -= 10000000000;
if (num[0] > 9999999999 || num[0] < 2000000000)
if (*p > 10000000000) /* 1 000 000 0000 */
*p -= 10000000000;
if (*p > 9999999999 || /* 999 999 9999 */
*p < 2000000000) /* 200 000 0000 */
return res;
break;
case 4: /* area */
if (num[0] != 1)
if (*p != 1)
return res;
p++;
fallthrough;
fallthrough; /* only gcc>=7 & clang>=12 */
case 3: /* last 3 numbers */
if (p[0] < 200 || p[0] > 999 || p[1] < 200 || p[1] > 999 ||
p[2] < 0 || p[2] > 9999)
if (*p < 200 || *p > 999 ||
*(p+1) < 200 || *(p+1) > 999 ||
*(p+2) > 9999)
return res;
break;
}